As part of a continuing investigation into theft and corruption, Port Arthur's former streets superintendent was arrested Thursday and charged with 46 counts of credit card abuse, the Jefferson County District Attorney's Office announced.

Carleton Edwards, 49, is accused of abusing a Port Arthur city-owned credit card, according to a statement from the District Attorney's office.

Edwards allegedly made unauthorized charges to the credit card from July 2014 through October 2015. He was arrested Thursday at this residence, and his bond was set at $120,000.

The ongoing investigation involves both current and former employees from several divisions within Port Arthur, according to the DA's statement.

Edwards is one of three employees fired in October after he admitted to using a city fuel card for his personal vehicle, City Manager Brian McDougal said.

Two others, Steven Guidry Jr. and Randle Davis, admitted to giving out their cards' PIN numbers, according to Mc-Dougal. They are still being investigated, McDougal said Thursday.

McDougal said the city is "working vigilantly" to identify all financial abuses by employees.

"Working for the city of Port Arthur is a good job with good benefits, and I don't know why people would jeopardize that," McDougal said.

In March, after balking earlier, the Port Arthur City Council unanimously approved a forensic audit of the city's finances.

McDougal recommended the audit, which he had advocated for since January, citing flaws in the city's financial practices and criminal allegations made against former city employees.

"We won't tolerate it," McDougal said. "We're going to find every person and we're going to work with the DA's office to prosecute them to the fullest extent of the law."

The DA's office said that people who come forward before they are contacted by police or charged with a crime will be seen as assisting in the investigation and could receive consideration for their cooperation.